Hi team,
I have spent a lot of time to solve the problem and also spent a lot of time to search the solution on net but every time I failed. The scenario is that

I am using @google-cloud/storage to upload my image on google cloud storage. Everything is fine. Images successfully uploaded on cloud. Now I want to show these images to my users but I didn't want to give public permission to images. So I created a signed url and trying to download them but everytime I am facing the following problem

<Error>
<Code>SignatureDoesNotMatch</Code>
<Message>
The request signature we calculated does not match the signature you provided. Check your Google secret key and signing method.
</Message>
<StringToSign>GET 1486639481 /<my bucket name>/<my image name></StringToSign>
</Error>

here is my code

//get signed url
    action: 'read',
        expires: Date.now() + 76000000,
        contentType: 'image/jpeg'
    };
    var file = bucket.file('TestingImage.jpg').getSignedUrl(options, function (error, signedUrl) {
        console.log('signed url...');
        console.log(signedUrl);
    });

But when I put this signed url in browser it give me the error.

I am following the url for uploading image
https://googlecloudplatform.github.io/google-cloud-node/#/docs/storage/0.6.0/storage

How ever I can download these image in nodejs using file.download() but I want to view this image on browser

Please guide me when am I wrong.